#VU82713 Insufficient verification of data authenticity in Mitsubishi Electric products - CVE-2023-4699

Vulnerability identifier: #VU82713

Vulnerability risk: High

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

CVE-ID: CVE-2023-4699

CWE-ID: CWE-345

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
MELSEC-F FX3U
MELSEC-F ​FX3U-32MR/UA1
MELSEC-F FX3U-64MS/ES
MELSEC-F ​FX3UC
MELSEC-F ​FX3UC-16MR/D-T
MELSEC-F FX3UC-16MR/DS-T
MELSEC-F FX3UC-32MT-LT
MELSEC-F FX3UC-32MT-LT-2
MELSEC-F FX3UC-16MT/D-P4
MELSEC-F FX3UC-16MT/DSS-P4
MELSEC-F ​FX3GC-32MT/D
MELSEC-F FX3GC-32MT/DSS
​MELSEC-F FX3GE
MELSEC-F ​FX3GA
​MELSEC-F FX3S
MELSEC-F ​FX3S-30My/z-2AD
MELSEC-F ​FX3SA-xMy-CM
MELSEC-F FX3U-64MR/UA1
​MELSEC-F FX3U-32MS/ES
MELSEC-F FX3G
MELSEC iQ-F FX5U
MELSEC iQ-F FX5UC
MELSEC iQ-F FX5UC-32MT/DS-TS
MELSEC iQ-F FX5UC-32MT/DSS-TS
MELSEC iQ-F FX5UC-32MR/DS-TS
MELSEC iQ-F FX5UJ
MELSEC iQ-F FX5S

Software vendor:
Mitsubishi Electric

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient verification of data authenticity. A remote attacker can reset the memory of the products to factory default state and perform a denial of service (DoS) attack.

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

• https://www.cisa.gov/news-events/ics-advisories/icsa-23-306-03
• https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2023-013_en.pdf